Added new options to readme.md
Added new options to readme.md

-cpPresetColors
-cpPresetLabel
-cpWidth

Manichon/angular2-color-picker,Alberplz/angular2-color-picker,Alberplz/angular2-color-picker,Manichon/angular2-color-picker,Manichon/angular2-color-picker,Alberplz/angular2-color-picker